Weight adjusting mechanism of adjustable dumbbell and adjustable dumbbell

Abstract

The weight adjusting mechanism comprises a cam which is rotatably arranged and a plurality of sliding block assemblies, the cam is provided with a plurality of protruding parts which are arranged at intervals, the sliding block assemblies are arranged on the periphery of the cam and matched with half dumbbell pieces on a support of the adjustable dumbbell, and the sliding block assemblies are arranged on the periphery of the cam and matched with the half dumbbell pieces on the support of the adjustable dumbbell. The semi-dumbbell piece is provided with a plurality of clamping grooves, the sliding block assembly is provided with an abutting portion and a clamping portion which stretch out and draw back synchronously, the abutting portion corresponds to the protruding portion, and the clamping portion corresponds to the clamping grooves, so that the cam is switched between the abutting position and the suspension position, namely, the cam is provided with two weight adjusting gears, and the semi-dumbbell piece is driven up or released in a matched mode. The counter weight of the semi-dumbbell piece can be increased or decreased so as to match the training intensity of a user, and the user is prevented from being injured in the training process.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a weight adjustment mechanism of an adjustable dumbbell and the adjustable dumbbell. Background Art

[0002] With the improvement of living standards, people pay more and more attention to physical health. Dumbbells are a common fitness equipment. Existing adjustable dumbbells include an adjustable dumbbell body, a dumbbell plate group and a support. The number of dumbbell plates at both ends of the adjustable dumbbell body can be adjusted by rotating the grip of the adjustable dumbbell body, thereby adjusting the weight of the dumbbell.

[0003] However, the weight of the dumbbell plates in the existing dumbbell plate sets is relatively large. Every time a user adds a dumbbell plate, the added weight of the dumbbell is likely to exceed the training intensity limit that the user can accept, causing the user to be injured during training. Utility Model Content

[0004] Therefore, in order to solve the above problems, the utility model provides an adjustable dumbbell weight adjustment mechanism and an adjustable dumbbell, which can provide a weight selection of half dumbbell plates to match the training intensity of the user and avoid injuries during training.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] The utility model provides a weight adjustment mechanism for an adjustable dumbbell, comprising a rotatably arranged cam and a plurality of slider assemblies; the cam has a plurality of convex portions arranged at intervals, a plurality of slider assemblies are arranged on the periphery of the cam and matched with a half dumbbell piece on a support of the adjustable dumbbell, the half dumbbell piece has a plurality of slots; the slider assembly has a synchronously retractable abutment portion and a clipping portion, the abutment portion corresponds to the convex portion of the cam, and the clipping portion corresponds to the slot of the half dumbbell piece.

[0007] Furthermore, a plurality of convex portions are evenly arranged on the outer peripheral surface of the cam.

[0008] Furthermore, it also includes a connecting sleeve, in which the cam is rotatably mounted; and a plurality of slider assemblies are mounted on the connecting sleeve and surround the cam.

[0009] Furthermore, the slider assembly includes a fixing part, an elastic part and a slider, the fixing part is assembled in the connecting sleeve; the fixing part has a guide groove radially penetrating therethrough, and the slider can be slidably penetrated in the guide groove; one end of the slider corresponds to the convex portion of the cam, and the other end corresponds to the slot; the elastic part is assembled between the fixing part and the slider.

[0010] Furthermore, one end of the slider has an outwardly protruding snap-fitting boss, and the other end has an outwardly protruding arc portion; the snap-fitting boss corresponds to the snap-fitting groove to form a snap-fitting setting, and the arc portion corresponds to the convex portion; the snap-fitting boss is the snap-fitting portion, and the arc portion is the abutting portion.

[0011] Furthermore, the fixing piece has a limiting protrusion, the connecting sleeve has an installation groove, the inner groove wall of the installation groove has a limiting groove, and the limiting protrusion is inserted into the limiting groove to realize the fixing piece being fixed in the installation groove; the inner and outer walls of the connecting sleeve are provided with an inner opening and an outer opening that pass through the installation groove, the inner opening of the connecting sleeve corresponds to the abutting portion, and the outer opening of the connecting sleeve corresponds to the clamping portion.

[0012] Furthermore, the elastic member is a spring, one end of the spring abuts against the inner wall of the fixing member, and the other end of the spring abuts against the inner wall of the sliding block.

[0013] Furthermore, it also includes a grip rod, and the cam is sleeved on the grip rod.

[0014] Furthermore, the number of the protrusions is 6; the number of the slots of the half dumbbell plate and the slider assembly is two and they are arranged one to one, and the two slider assemblies and the slots are symmetrically arranged on both sides of the cam.

[0015] The utility model also provides an adjustable dumbbell, which at least comprises the above-mentioned weight adjustment mechanism of the adjustable dumbbell.

[0016] The technical solution provided by the utility model has the following beneficial effects:

[0017] The cam is switched between an abutting position and a suspended position by convex parts arranged at intervals, so that the cam has two weight adjustment gears to cooperate with lifting or releasing the half dumbbell plate.

[0018] The convex part of the cam is then pressed against the abutting part, thereby driving the clamping part to extend into the clamping slot of the half dumbbell plate to form a clamping fixation, and then the half dumbbell plate can be lifted to increase the weight of the half dumbbell plate to match the training intensity of the user and avoid injuries during training. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a partial cross-sectional view of the weight adjustment mechanism of the adjustable dumbbell in the suspended position in the first embodiment;

[0020] Figure 2 Shown Figure 1 A magnified schematic diagram of area A in the middle;

[0021] Figure 3Shown is a partial cross-sectional view of the weight adjustment mechanism of the adjustable dumbbell in the abutment position in the first embodiment;

[0022] Figure 4 Shown is a schematic diagram of the cam in the first embodiment;

[0023] Figure 5 Shown is a schematic diagram of the connecting sleeve in the first embodiment;

[0024] Figure 6 Shown is an exploded view of the slider assembly in the first embodiment;

[0025] Figure 7 Shown is a schematic diagram of the fixing member in the first embodiment;

[0026] Figure 8 Shown is a schematic diagram of a slider in Embodiment 1;

[0027] Fig. 9 Shown is a schematic diagram of a half dumbbell plate in Example 1;

[0028] Fig.10 The figure shows the overall appearance of the adjustable dumbbell in the first embodiment. DETAILED DESCRIPTION

[0029] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0030] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0031] Embodiment 1

[0032] Reference Figures 1 to 10 As shown, embodiment 1 provides a weight adjustment mechanism for an adjustable dumbbell, comprising a rotatable cam 1 and two slider assemblies 2; the cam 1 has 6 convex portions 11 arranged at intervals, and the two slider assemblies 2 are arranged on the outer periphery of the cam 1 and cooperate with the half dumbbell plate 3 on the support 6 of the adjustable dumbbell, and the half dumbbell plate 3 has two slots 31; the slider assembly 2 has a synchronously retractable abutment portion 232 and a clamping portion 231, the abutment portion 232 corresponds to the convex portion 11 of the cam 1, and the clamping portion 231 corresponds to the slot 31 of the half dumbbell plate 3.

[0033] In this embodiment, the weight adjustment mechanism of the adjustable dumbbell (hereinafter referred to as the weight adjustment mechanism) is assembled on the adjustable dumbbell, that is, the adjustable dumbbell also includes a dumbbell plate group 7 and an adjustable dumbbell body (not marked) belonging to the prior art. The weight adjustment mechanism is assembled on the adjustable dumbbell body and cooperates with the dumbbell plate group 7 to adjust the counterweight. The adjustable dumbbell body, the half dumbbell plate 3 and the dumbbell plate group 7 can all be placed on the support 6, and the unit weight of the half dumbbell plate 3 is half of the unit weight of the dumbbell plate in the existing dumbbell plate group 7 (or other proportions, such as 30% or 60%, etc.). In addition, the abutting portion 232 and the clamping portion 231 of the slider assembly 2 are both subjected to the elastic force inside themselves to form a synchronous telescopic setting, and the two clamping grooves 31 of the half dumbbell plate 3 and the two slider assemblies 2 are arranged in a one-to-one correspondence.

[0034] By means of six convex portions 11 arranged at intervals, a neutral position in which the convex portion 11 is located between two adjacent convex portions 11 (i.e., a suspended position) and can release the half dumbbell plate 3, and a weighted position in which the convex portion 11 of the cam 1 abuts against the abutment portion 232 and can lift the half dumbbell plate 3 (i.e., the corresponding abutment position) are formed respectively, so that the cam 1 has two weight adjustment positions to cooperate in lifting or releasing the half dumbbell plate 3.

[0035] like Figure 3 As shown, when the weight adjustment mechanism is in the weighting gear, the convex portion 11 of the cam 1 presses against the abutment portion 232 of the slider assembly 2, thereby driving the clamping portion 231 of the slider assembly 2 to extend from the initial position into the clamping groove 31 of the half dumbbell plate 3 to form a clamping fixation between the slider assembly 2 and the half dumbbell plate 3, thereby being able to lift the half dumbbell plate 3, so as to increase the weight of the half dumbbell plate 3 to match the training intensity of the user, and avoid injuries due to excessive single weight increase during training.

[0036] like Figure 1 As shown, when the weight adjustment mechanism is in the neutral position, the position between the two adjacent protrusions 11 corresponds to the abutment portion 232 of the slider assembly 2, so that the abutment portion 232 of the slider assembly 2 is suspended between the two adjacent protrusions 11 and no longer abuts against each other, and the abutment portion 232 and the clamping portion 231 of the slider assembly 2 are synchronously retracted to the initial position under the action of their own elastic force, that is, the clamping portion 231 of the slider assembly 2 extends out of the clamping slot 31 of the half dumbbell plate 3 to release the clamping relationship, and then the user picks up the adjustable dumbbell body and releases the half dumbbell plate 3 at the same time, and the half dumbbell plate 3 continues to remain stationary on the support 6, and at this time the half dumbbell plate 3 is no longer used as a configuration.

[0037] Of course, in other embodiments, the number of the protrusions 11 of the cam 1 may also be two, four or eight. The specific number of the protrusions 11 is determined according to the structure of the adjustable dumbbell and the number of gears.

[0038] In addition, the number of slider assemblies 2 or the number of slots 31 of the half dumbbell pieces 3 can also be 3, 4 or 5 or more. Preferably, the number of slider assemblies 2 and the number of slots 31 of the half dumbbell pieces 3 are both two.

[0039] In another preferred embodiment, the weight adjustment mechanism also includes a connecting sleeve 4, and the cam 1 is rotatably assembled in the connecting sleeve 4; two slider assemblies 2 are assembled on the connecting sleeve 4 and surround the cam 1, specifically, 6 protrusions 11 are evenly arranged on the outer peripheral surface of the cam 1.

[0040] In this specific embodiment, the two slider assemblies 2 and the card slot 31 are symmetrically arranged on both sides of the cam 1, and the connecting sleeve 4 has an axially penetrating mounting hole 42. The cam 1 can be rotatably assembled in the mounting hole 42 of the connecting sleeve 4 to realize the cam 1 to freely rotate circumferentially in the mounting hole 42, so as to facilitate the user to realize the gear adjustment of the weight adjustment mechanism by rotating the cam 1 in the connecting sleeve 4.

[0041] The six convex portions 11 are evenly arranged on the outer peripheral surface of the cam 1, so that the six convex portions 11 of the cam 1 are divided into three groups, each group having two mutually symmetrical convex portions 11. When switching to the weighted gear (or neutral gear), the two convex portions 11 in the same group are synchronously pressed against (or away from) the abutting portions 232 of the two slider assemblies 2, so as to realize the synchronous clamping and fixing (or releasing the clamping relationship) between the two clamping portions 231 and the two clamping grooves 31, so as to ensure that the half dumbbell plate 3 is lifted (or released) by the adjustable dumbbell body.

[0042] Of course, in other embodiments, the spacing between the convex portions 11 on the outer peripheral surface of the cam 1 is not limited thereto and will not be described in detail herein.

[0043] In another preferred embodiment, the slider assembly 2 includes a fixing member 21, an elastic member 22 and a slider 23, wherein the fixing member 21 is assembled in the connecting sleeve 4; the fixing member 21 has a radially arranged guide groove 211, and the slider 23 can be slidably penetrated in the guide groove 211; one end of the slider 23 corresponds to the protrusion 11 of the cam 1, and the other end corresponds to the slot 31; the elastic member 22 is assembled between the fixing member 21 and the slider 23.

[0044] The fixing member 21 has a clearance notch 213 on both sides of the radial direction of the cam 1 to cooperate with the telescopic end of the slider 23, so as to avoid structural interference between the two telescopic ends of the slider 23 (i.e., the clamping portion 231 and the abutting portion 232) and the fixing member 21, so as to facilitate the telescopic end of the slider 23 to extend out of the clearance notch 213 of the fixing member 21.

[0045] Both sides of the slider 23 have guide bosses 233 that match the guide groove 211. The extension direction of the guide groove 211 is the radial direction. The guide boss 233 of the slider 23 can be slidably assembled in the guide groove 211 to achieve a sliding connection between the fixing member 21 and the slider 23. Under the action of the elastic force of the elastic member 22, the slider 23 can achieve radial expansion and contraction in the fixing member 21.

[0046] Specifically, one end of the slider 23 has an outwardly protruding snap-fitting boss, and the other end has an outwardly protruding arc portion; the snap-fitting boss corresponds to the snap-fitting groove 31 to form a snap-fitting setting, and the arc portion corresponds to the convex portion 11; the snap-fitting boss is the snap-fitting portion 231, and the arc portion is the abutting portion 232.

[0047] When the weight adjustment mechanism is in the weighting position, the convex portion 11 of the cam 1 presses against the arc portion 232 of the slider 23 and overcomes the elastic force of the elastic member 22, thereby driving the engaging boss 231 of the slider 23 to extend from the initial position into the engaging groove 31 of the half dumbbell plate 3 to form a clamping fixation between the slider assembly 2 and the half dumbbell plate 3, thereby being able to lift the half dumbbell plate 3.

[0048] When the weight adjustment mechanism is in the neutral position, the position between two adjacent protrusions 11 corresponds to the arc portion 232 of the slider 23, so that the arc portion 232 of the slider 23 is suspended between the two adjacent protrusions 11 and no longer abuts against each other, and the engaging boss 231 and the arc portion 232 of the slider 23 are synchronously retracted to the initial position under the elastic force of the elastic member 22, that is, the engaging boss 231 of the slider 23 extends out of the engaging groove 31 of the half dumbbell plate 3 to release the engaging relationship so as to be able to release the half dumbbell plate 3.

[0049] In another preferred embodiment, the fixing member 21 has a limiting protrusion 212, the connecting sleeve 4 has a mounting groove 41, the inner groove wall of the mounting groove 41 has a limiting groove 411, the limiting protrusion 212 is inserted into the limiting groove 411 to realize that the fixing member 21 is fixed in the mounting groove 41, and the limiting groove 411 limits the limiting protrusion 212 in the radial and circumferential directions so that the slider assembly 2 is fixed on the connecting sleeve 4, the inner and outer walls of the connecting sleeve are provided with an inner opening 43 and an outer opening 44 that pass through the mounting groove 41, the inner opening 43 of the connecting sleeve corresponds to the arc portion 232, and the outer opening 44 of the connecting sleeve corresponds to the clamping boss 231, and the inner opening 43 and the outer opening 44 of the connecting sleeve facilitate the arc portion 232 and the clamping boss 231 to pass back and forth in the corresponding openings (such as the inner opening 43 or the outer opening 44).

[0050] In another preferred embodiment, the elastic member 22 is a spring, one end of the spring abuts against the inner wall of the fixing member 21 , and the other end of the spring abuts against the inner wall of the sliding block 23 .

[0051] In this specific embodiment, the inner wall of the fixing member 21 has a first mounting boss (not marked), and the inner wall of the arc portion 232 of the slider 23 has a second mounting boss (not marked). One end of the spring is sleeved on the first mounting boss of the fixing member 21, and the other end is sleeved on the second mounting boss of the slider 23 to achieve assembly of the spring.

[0052] The elastic force is formed by the elastic deformation of the spring to cooperate with the slider 23 to switch between the abutting position and the suspended position, thereby realizing the gear adjustment of the weight adjustment mechanism.

[0053] Of course, in other embodiments, the elastic member 22 may also be a spring sheet, which will not be described in detail here.

[0054] In another preferred embodiment, the weight adjustment mechanism further includes a handle bar 5 , and the cam 1 is sleeved on the handle bar 5 .

[0055] The cam 1 has a central sleeve hole 12, and the grip 5 is assembled in the central sleeve hole 12 of the cam 1 in a snap-fit ​​manner to achieve a fixed connection between the grip 5 and the cam 1, so that the user can drive the cam 1 to rotate by rotating the grip 5 to achieve gear adjustment of the weight adjustment mechanism.

[0056] Embodiment 2

[0057] Embodiment 2 provides an adjustable dumbbell, which at least includes the weight adjustment mechanism of the adjustable dumbbell of embodiment 1.

[0058] The cam is switched between an abutting position and a suspended position by convex parts arranged at intervals, so that the cam has two weight adjustment gears to cooperate with lifting or releasing the half dumbbell plate.

[0059] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An adjustable dumbbell weight adjustment mechanism, characterized in that: It includes a cam and a plurality of slider assemblies that can be rotatably arranged; The cam has a plurality of convex parts arranged at intervals, a plurality of slider assemblies are arranged on the periphery of the cam and matched with a half dumbbell piece on a support of an adjustable dumbbell, and the half dumbbell piece has a plurality of slots; The slider assembly comprises a synchronously retractable abutment portion and a clamping portion, wherein the abutment portion corresponds to the convex portion of the cam, and the clamping portion corresponds to the clamping groove of the half dumbbell plate.

2. The weight adjustment mechanism of the adjustable dumbbell according to claim 1, characterized in that: A plurality of convex portions are evenly arranged on the outer peripheral surface of the cam.

3. The weight adjustment mechanism of the adjustable dumbbell according to claim 1, characterized in that: It also includes a connecting sleeve, in which the cam is rotatably mounted; and a plurality of slider assemblies are mounted on the connecting sleeve and surround the cam.

4. The weight adjustment mechanism of the adjustable dumbbell according to claim 3, characterized in that: The slider assembly includes a fixing part, an elastic part and a slider, wherein the fixing part is assembled in the connecting sleeve; the fixing part has a radially arranged guide groove, and the slider can be slidably penetrated in the guide groove; one end of the slider corresponds to the convex part of the cam, and the other end corresponds to the slot; the elastic part is assembled between the fixing part and the slider.

5. The weight adjustment mechanism of the adjustable dumbbell according to claim 4, characterized in that: One end of the slider has an outwardly protruding clamping boss, and the other end has an outwardly protruding arc portion; the clamping boss corresponds to the clamping groove to form a clamping setting, and the arc portion corresponds to the convex portion; the clamping boss is the clamping portion, and the arc portion is the abutting portion.

6. The weight adjustment mechanism of the adjustable dumbbell according to claim 4 or 5, characterized in that: The fixing piece has a limiting protrusion, the connecting sleeve has an installation groove, the inner groove wall of the installation groove has a limiting groove, and the limiting protrusion is inserted into the limiting groove to realize the fixing piece being fixed in the installation groove; the inner and outer walls of the connecting sleeve are provided with an inner opening and an outer opening that pass through the installation groove, the inner opening of the connecting sleeve corresponds to the abutting portion, and the outer opening of the connecting sleeve corresponds to the clamping portion.

7. The weight adjustment mechanism of the adjustable dumbbell according to claim 4, characterized in that: The elastic member is a spring, one end of the spring abuts against the inner wall of the fixing member, and the other end of the spring abuts against the inner wall of the sliding block.

8. The weight adjustment mechanism of the adjustable dumbbell according to claim 3, characterized in that: It also includes a grip rod, and the cam is sleeved on the grip rod.

9. The weight adjustment mechanism of the adjustable dumbbell according to claim 1, characterized in that: The number of the convex parts is 6; the number of the slots of the half dumbbell plate and the slider assembly is two and they are arranged one by one, and the two slider assemblies and the slots are symmetrically arranged on both sides of the cam.

10. An adjustable dumbbell, characterized in that: At least comprises the weight adjustment mechanism of the adjustable dumbbell as described in any one of claims 1 to 9.

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